SEVERITY OF CURVULARIA IN 67 SELFED S4 LINES OF YELLOW CORN

Among the main problems affecting the production of corn (Zea mays L.), it could be mentioned the diseases caused by different pathogens, including Curvularia leaf spot caused by Curvularia spp. The cheaper control, viable and that does not cause any environmental damage against almost any pathogen is through genetic host resistance, i.e. by breeding and use of resistant varieties. Therefore the aim of this study was to evaluate the severity of curvularia in promissory inbred lines S4 of yellow maize derived from commercial materials. In the first population (LM1) found maximum values of 5.6 and of minimum 1.4 under injuries by cm-2, while in the second experiment (LM2) maximum and minimum averages were 8.0 and 1.5 lesions by cm-2, respectively. Difference was found among the valuated line depending on the severity of Curvularia leaf spot, in both experiments. With the information obtained, it becomes important to consider the severity values obtained in these experiments, for the future development of new maize hybrids with contrasting characters in the behavior of the plant to certain diseases, ensuring the success of a breeding program. On the other hand, for future similar work it is recommended to do more than one evaluation during different phenological stages of the crop.

• 主要作者: Garcés Fiallos, Felipe Rafael (author)
• 其他作者: Aguirre Calderón, Ángel Jefferson (author), Liu-ba Delfini, Gabriel Antonio (author), Carbo Morán, Jaime Javier (author)
• 格式: article
• 语言: eng
• 出版: 2012
• 主题: ZEA MAYS; EVALUACIÓN SANITARIA; CURVULARIA SPP.; SANITARY ASSESSMENT
• 在线阅读: https://revistas.uteq.edu.ec/index.php/cyt/article/view/107